org.mule.module.db.internal.metadata
Class AbstractQueryMetadataProvider

java.lang.Object
  org.mule.module.db.internal.metadata.AbstractQueryMetadataProvider

All Implemented Interfaces:

QueryMetadataProvider

Direct Known Subclasses:

SelectMetadataProvider, UpdateMetadataProvider

public abstract class AbstractQueryMetadataProvider
extends Object
implements QueryMetadataProvider

Base class for QueryMetadataProvider implementations

Field Summary

protected DbConfigResolver	dbConfigResolver
protected Query	query

Constructor Summary

AbstractQueryMetadataProvider(DbConfigResolver dbConfigResolver, Query query)

Method Summary

protected org.mule.common.metadata.MetaDataModel	getDataTypeMetadataModel(int columnTypeName)
protected org.mule.common.Result<org.mule.common.metadata.MetaData>	getDynamicInputMetadata(PreparedStatement statement, Query query) Calculates the input metadata for a statement
protected abstract org.mule.common.Result<org.mule.common.metadata.MetaData>	getDynamicOutputMetadata(PreparedStatement statement) Calculates the dynamic output metadata from a statement
org.mule.common.Result<org.mule.common.metadata.MetaData>	getInputMetaData() Provides input metadata
org.mule.common.Result<org.mule.common.metadata.MetaData>	getOutputMetaData(org.mule.common.metadata.MetaData metaData) Provides output metadata
protected abstract org.mule.common.Result<org.mule.common.metadata.MetaData>	getStaticOutputMetadata()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

query

protected final Query query

dbConfigResolver

protected final DbConfigResolver dbConfigResolver

Constructor Detail

AbstractQueryMetadataProvider

public AbstractQueryMetadataProvider(DbConfigResolver dbConfigResolver,
                                     Query query)

Method Detail

getStaticOutputMetadata

protected abstract org.mule.common.Result<org.mule.common.metadata.MetaData> getStaticOutputMetadata()

Returns:

output metadata for a type of query. Can be null

getDynamicOutputMetadata

protected abstract org.mule.common.Result<org.mule.common.metadata.MetaData> getDynamicOutputMetadata(PreparedStatement statement)

Calculates the dynamic output metadata from a statement

Parameters:

statement - statement used to calculate the metadata

Returns:

output metadata for the statement. Can be null

getDynamicInputMetadata

protected org.mule.common.Result<org.mule.common.metadata.MetaData> getDynamicInputMetadata(PreparedStatement statement,
                                                                                            Query query)

Calculates the input metadata for a statement

Parameters:

statement - statement used to calculate the metadata

query - query that will be executed in the statement

Returns:

getDataTypeMetadataModel

protected org.mule.common.metadata.MetaDataModel getDataTypeMetadataModel(int columnTypeName)

getInputMetaData

public org.mule.common.Result<org.mule.common.metadata.MetaData> getInputMetaData()

Description copied from interface: QueryMetadataProvider

Provides input metadata

Specified by:

getInputMetaData in interface QueryMetadataProvider

Returns:

input metadata for a given type of query. Can be null

getOutputMetaData

public org.mule.common.Result<org.mule.common.metadata.MetaData> getOutputMetaData(org.mule.common.metadata.MetaData metaData)

Description copied from interface: QueryMetadataProvider

Provides output metadata

Specified by:

getOutputMetaData in interface QueryMetadataProvider

Parameters:

metaData - metadata propagated from the input

Returns:

input metadata for a given type of query. Can be null